"Have love for your friend up to a limit for it is possible he may turn into your enemy some day; and hate your enemy up to a limit for it is possible he may turn into your friend some day." (Ali bin Abi Talib, the Fourth Caliph of Islam)

"The holder of authority is like the rider of a lion - he is envied of his position but he well knows his position." (Ali bin Abi Talib, the Fourth Caliph of Islam)

"The sourness of this world is sweetness of the next world while the sweetness of this world is the sourness of the next one." (Ali bin Abi Talib, the Fourth Caliph of Islam)

"When you fall in destitution, trade with Allah with charity." (Ali bin Abi Talib, the Fourth Caliph of Islam)